Pyrite

Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru (08/2014)

Specimen size: 9.2 × 8.1 × 3.5 cm = 3.62” × 3.19” × 1.38”
Main crystal size: 3.7 × 3.2 cm = 1.46” × 1.26”